Got another for you all after browsing my folders to see which characters caught my eye; Hex Maniac, specifically the version that's been getting art for years, rather than the new variant in the new games coming soon (though that one is good too). Another case of a character who just looks really damn good when drawn fat, especially when it comes with massive lactating tits, thanks to that one NPC of her type selling milk in a town one time.
(spoilered images have some milk and wetness in them, did that for folks not fond of those)
As usual I'll give my rundown of what I think are fitting fatty traits of her (even if she's actually just a "type" of trainer, and not a truly-singular character like usual):
>questionable mental stability, and as most know there's a whole lot of crazy fat girls out there, BBWs and mental illness go together like processed food and carbonated soda
>strong goth + NEET vibes thanks to the eye bags, plus the outfits and mannerisms commonly ascribed to her
>is effectively the pokemon version of an occultist chick or pagan/witch gal, constantly hanging around with dark entities that revel in excess and moral/physical corruption
>psychic in the traditional sense of sometimes doing things like floating and telekinesis (but not actually psychic in the pokemon sense because dark and psychic are opposing element types in it), meaning much less physical activity needed to keep eating and lazing around
I get the feeling she'd be the type of fat girl who's doughy thanks to a mix of atrocious diet and almost no physical activity to burn calories, as well as hardly ever leaving wherever she lives to go outside. Probably pretty horny too since you kind of have to go outside to some degree to get laid, and she probably wouldn't have had much opportunity even then thanks to being fat (their loss), smelling a bit funky and being clearly not-quite-normal in the head. Cue her retreating back home, eating more and not going out again for a while as a result of things going badly, causing her weight to climb even higher each time the cycle repeats.
In the event she did find a guy or gal who was genuinely attracted to her, including her weirdness as well as her flabbiness, I assume she'd get extremely-clingy and do basically anything she thinks is needed to keep them with her and happy. On the fun side, it'd mean she'd be ready-to-go with a funnel and hose before you could even finish saying "would you be ok with gaining even more weight because I like it", and would gladly plump herself up to meet your desires with zero hesitation. She'd also most likely be all too happy to try kinky stuff for mutual pleasure, i.e. teasing her about her body and weight, or some degree of dom/sub play. I really think she'd be the type to respond to being called a gluttonous lardass by her partner with "more" rather than "stop", if you catch my drift.
On the not-so-pleasant side, you ogling a different fatty would definitely not go well. At best, she'd throw caution to the wind and try anything she deems necessary to be better than whoever she caught you admiring, up to and including using occult powers/gaining/both to boost her figure beyond the competing woman, even if it ends up being massive overkill with big consequences. Worse-case scenario, she's now royally pissed at you, and that rarely works out well even with completely "normal" women, much less fat girls with dark magic powers and a whole lot of screws loose in their heads.
Pretty risky gamble, but hey, sometimes being crazy and weird is a pro for a prospective partner rather than a con, especially if you yourself are already odd and a bit off-kilter. Also, goth chicks of any variety who do a 180 from the tradition of starving themselves bone-thin to emulate deathliness, and instead try to wreck their bodies by overindulging and becoming embodiments of excess are insanely-sexy in my opinion. She might not quite be "goth" since she's usually happy rather than sad or angry, but hey, I'm fine with counting her as long as she remains dark, odd and fat.